KB Home is being sued by a group of homeowners in Cary, N.C., because it installed weather barriers behind fiber cement siding in some residential developments but not others, according to a case summary provided by North Carolina Lawyers Weekly.

A Business Court judge certified the lawsuit, describing the class as "all persons in the state of North Carolina who own a home that was constructed by KB Homes without a weather-restrictive barrier behind the exterior veneer of Hardiplank cement fiber lap siding."